Receptor

/rɪˈsɛptər/

Meaning & Definition

noun

A cell or organelle that responds to external stimuli or signals, often involved in sensory perception or biological processes.

The photoreceptor cells in the retina are responsible for converting light into neural signals.

A protein molecule that binds to specific ligands, such as hormones, neurotransmitters, or drugs, and is involved in signal transduction.

The hormone insulin binds to its receptor on the cell surface, triggering a series of metabolic responses.

An element in a communication system that receives signals, such as a radio or television receiver.

The radio receptor must be tuned to the correct frequency to pick up the broadcast signal.

From Latin 'receptus', meaning 'taken back'.

pain receptor

A type of receptor that responds to painful stimuli.

hormone receptor

A receptor that specifically binds to a hormone and triggers a response.

neurotransmitter receptor

A receptor located on a neuron's membrane that interacts with neurotransmitters.

transmitter

A substance or device that sends signals.

ligand

A molecule that binds to a receptor to form a complex.

signal

A detectable change that conveys information.

A person who receives information passively.

He’s just a receptor in the meeting, not contributing much.

Someone who is overly receptive to emotions or vibes.

She's such a receptor; she can feel the mood in the room instantly.